Marker



J. LEE

MARKER Feb. 11, 1930,

Filed March 6, 1928 lnoenior 625 Lee,

dumes Veal 65 I fig-l.

(Toma s Patented Feb. 11, 1930 1 74 312.

UNITED STATES PATENT; OFFICE JAMES WESLEY LEE, F GRAND HAVEN, MICHIGAN,ASSIGNOR TO CHALLENGE MA.- .GHINERY COMPANY, OF GRAND HAVEN, MICHIGAN, ACORPORATION OF MICHIGAN MARKER I Application filed March 6, 1928. SerialHo. .259,404.

This invention relates to a marker partic'u- Fig. 4 is a similar sectionshowing a prelarly useful in conjunction with line mark- 'ferred form ofsecuring means therefor in ing. In factories, many times, runways aredotted lines.

used on one side of which trucks carrying Fig. 5is a plan view similarto Fig. 2 of 5 material going through the factory are moved a differentform of marker. in one direction, while at the opposite side Fig. 6 is acentral vertical section therethereof the trucks are moved in theopposite through, and

direction. It is desirable that the trucks Fig. 7 is a central verticalsection through moving in any one direction stay at one side a stillfurther form of marker.

10 of the runway-and frequently a marking line Like reference charactersrefer to like parts 0 is used lying longitudinally and at the center inthe different figures of the drawing. of the runway to mark the lanes oftravel. As shown in Figs. 1 to 4 inclusive, the

The same construction holds good with remarker is made of sheet metalstamped into spect to highways, particularly concrete highsuitable formincluding a central recess 1,

ways. And very frequently at the center the bottom 2 of which lies in ahorizontal c5 and lengthwise of the road, marking lines are plane. Themetal is pressed and formed to painted for the guidance of vehiclesmoving provide a plurality of concentric grooves 3 in, bppositedirections on opposite sides of having parts 4 in the substantially samethe road. horizontal plane with the bottom 2 of the Lines made bypainting the same are temcentral recess. The connecting portions 5 70porary at best. 'The paint soon wears off between said central recess 1and groove 3 and in a comparatively short time the lines and outwardlybeyond the outermost groove are either very faint or wholly obliteratedare shaped so that the outer surfaces lie subnecessitating repainting. Ystantially in the curve of a segment of a With my invention it isdesigned, that a sphere. In order to strengthen and reinforce 75permanent marker may ,be used and a large the outer edges of the markerthe edges of the number of them placed in alignment at propmetal arebent back underneath making a erly spaced intervals and in this wayelimicontinuous annular lip 6. nate the necessity of frequent renewal ofA pluralityof these markers may be used marking lines as now used infactories, on to mark a line on anysurface such as a facso highways andother places. The invention tory floor, the center of a road or thelike.

which I have devised, while simple, is one of A hole 7 is made throughthe bottom 2 of the great utility in defining and marking a dicentralrecess through which a securing bolt vision line for traffic whereby allvehicles or screw 8 may be passed which'threads into moving in onedirection will stay at one side the floor on road 9, making a secure andfirm of the line and those travelling in the oppoconnection. The parts 2and 4 of the central site direction will stay at the opposite slderecess 1 and concentric grooves 3 are drawn thereof. flat against thesurface of the floor or road An understanding of the invention and theand when the markers are attached are in 40 construction of the samewill be apparent horizontal plane. Before attachment the from thefollowing description taken in conlowermost points of the return lips 6,hownection with the accompanyingdrawing, in ever, are slightly lowerthan the under side which, 2 and 4: of the marker, so that when the se-Fig. lis afragmentary plan view illustratcuring bolt 8 is attached anddrawn down 45 ing a plurality of the markers located in tightly, themarker is sprung downwardly alinement and spaced from each other. at itsmiddle point, as shown in Fig. 4; and at Fig. 2 is an enlarged plan viewof one form its edges bears very firmly and snugly against of marker.the surface over which it. is pressed. 1

Fig. 3 is a central vertical section there In Fi s. 5 and 6 a differentform of the 50 through. marker is shown wherein a plurality of con- IFigs. 2, 3 and 4 in some respects, namely; in

that the radial grooves 12 effect complete drainage and water will notcollect and be held as in the recess 1 and grooves 3 as in the markerfirst described. In Fig. 7 instead of 1 making the marker of sheet metalit is cast as a solid member with a central recess or depression 1, anopening 7 at the bottom thereof, and with concentric grooves 3 made inthe upper surface of the marker around the central recess.

The upper surface of the markers of the character described are coveredwith a noncorrosive plating making a hard bright surface. Accordingly,it is not necessary to paint and repaint markers of the type described.The grooved outer surface is not nearly as liable to cause accidents assmooth outer surfaces should a workman in a factory step thereon.- Thisdevice though of very simple character has proved very practical inservice. When it is made of sheet metal, the grooved form greatlystrengthens and reinforces the metal from which 1t 1s made. It ischeaply produced and when 1nstalled is permanent and does not have to bereplaced with the great frequency required with painted line markers ona road surface or factory floor. The mvention 1s defined in the appendedclaims and is to be considered comprehensive of all forms of structurecoming within their scope.

I claim: I

1. A marker formed from a single piece of sheet metal with a raisedupper surface having a centrally disposed recess therein and a pluralityof spaced apart grooves around said recess, the bottoms of said grooves,the bottom of said recess and the edges of the marker lying insubstantially the same horizontal plane when installed to form asubstantially fiat under surface.

2. A marker formed from a single plece of sheet metal with a raisedupper surface having a centrally disposed recess therein and a pluralityofspaced apart grooves around said recess, said marker at its edgesbeing turnedback to provide an annular under lip, the bottoms of saidgrooves, and

said central recess and the lowermost points of said under lip lying insubstantially the same horizontal plane but with the bottom of saidgrooves and recess slightly elevated so that when attached to a surface,the central part of the marker is drawn downward and the edge portion ofthe marker brought snugly against the surface over which it is placed.

3. A marker comprising, a body having a substantially flat under sideand a raised upper side with a central recess therein, said raised upperside of the marker around said recess having a plurality of groovestherein, said marker at its edges being turned back to provide anannular under lip.

4:. A marker comprising, a body circular in outline having asubstantially fiat under slde and a rounded upper side with a centrallydisposed recess at the upper side, a plurality of spaced apartconcentric grooves made around said recess in the upper rounded surfaceof said body and said marker at its edges being turned back to providean an- .nular under lip.

the central part of the marker is drawn downward and the edge portion ofthe marker brought snugly against the surface over which it is placed.

6. A marker formed from a single piece of sheet metal with a raisedupper surface having a centrally disposed recess therein and a pluralityof spaced apart grooves around said recess, and a radial grooveextending from said central recess to the periphery, the bottoms of saidgrooves, the bottom of said recess and the edges of the marker lying insubstantially the .same horizontal plane when installed to form asubstantially flat under surface.

In testimony whereof I afiix my signature.

JAMES WESLEY LEE.

